Section 17(4) in Karnataka Panchayat Raj Act, 1993
(4)The [Civil Judge (Junior Division)] [Substituted by Act 29 of 1997 w.e.f. 20.10.1997.], may upon such terms as to costs and otherwise as he may deem fit, allow the particulars of any corrupt practice alleged in the petition to be amended or amplified in such manner as may in his opinion be necessary for ensuring a fair and effective trail of the petition, but shall not allow any amendment of the petition , which will have the effect of introducing particulars of a corrupt practice not previously alleged in the petition.